/* CSS Variables */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --medium-gray: #6c757d;
    --white: #ffffff;
    --shadow: 0 5px 15px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
    --border-radius: 10px;
}

/* Dark Mode */
.dark-mode {
    --primary-color: #1a252f;
    --secondary-color: #2980b9;
    --accent-color: #c0392b;
    --light-color: #2c3e50;
    --dark-color: #f8f9fa;
    --medium-gray: #95a5a6;
    --white: #2c3e50;
    --shadow: 0 5px 15px rgba(0,0,0,0.3);
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--white);
    color: var(--dark-color);
    transition: var(--transition);
    scroll-behavior: smooth;
    padding-top: 80px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Vertical Control Panel - Right Side */
.vertical-controls {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 20px 15px;
    border-radius: 25px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(0,0,0,0.1);
}

.dark-mode .vertical-controls {
    background: rgba(44, 62, 80, 0.95);
    border-color: rgba(255,255,255,0.1);
}

.control-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: var(--light-color);
    color: var(--dark-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition);
}

.control-btn:hover {
    background: var(--secondary-color);
    color: white;
    transform: translateY(-3px);
}

.control-btn.highlight {
    background: var(--accent-color);
    color: white;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--white);
    box-shadow: var(--shadow);
    z-index: 999;
    transition: var(--transition);
}

.dark-mode .navbar {
    background: var(--primary-color);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--primary-color);
}

.logo img {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    gap: 25px;
    list-style: none;
}

.nav-link {
    text-decoration: none;
    color: var(--medium-gray);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: var(--transition);
}

.nav-link.active,
.nav-link:hover {
    color: var(--secondary-color);
}

.nav-link.active::after,
.nav-link:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.hamburger .bar {
    width: 25px;
    height: 3px;
    background: var(--dark-color);
    border-radius: 2px;
    transition: var(--transition);
}

/* Hero Section */
.hero-section {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    position: relative;
    overflow: hidden;
    margin-top: -80px;
    padding-top: 80px;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    padding: 40px 20px;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 30px;
    font-weight: 400;
}

.hero-description {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

.hero-animation {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 100px;
    height: 100px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 150px;
    height: 150px;
    bottom: 20%;
    right: 10%;
    animation-delay: 2s;
}

.shape-3 {
    width: 80px;
    height: 80px;
    top: 60%;
    left: 80%;
    animation-delay: 4s;
}

/* Section Styles */
.section {
    padding: 100px 0;
}

.bg-light {
    background-color: var(--light-color);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--secondary-color);
}

.section-subtitle {
    text-align: center;
    color: var(--medium-gray);
    margin-bottom: 50px;
    font-size: 1.1rem;
}

/* Card Styles - Consistent Square/Rectangle */
.intro-card,
.screen-card,
.tech-card,
.download-card,
.document-card,
.team-card,
.pitch-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

.intro-card:hover,
.screen-card:hover,
.tech-card:hover,
.download-card:hover,
.document-card:hover,
.team-card:hover,
.pitch-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

/* Introduction Section */
.intro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.intro-card {
    padding: 30px;
    text-align: center;
}

.intro-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.problem-statement {
    text-align: left;
}

.problem-points {
    margin-top: 20px;
}

.problem-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 15px;
}

.problem-item i {
    color: var(--accent-color);
    margin-top: 3px;
}

/* Platform Screens Section */
.screens-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-top: 50px;
}

.screen-card {
    text-align: center;
}

.screen-frame {
    height: 500px;
    overflow: hidden;
    background: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.screen-frame img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.5s ease;
}

.screen-card:hover .screen-frame img {
    transform: scale(1.05);
}

.screen-card h3 {
    padding: 20px 20px 10px;
    color: var(--primary-color);
}

.screen-card p {
    padding: 0 20px 20px;
    color: var(--medium-gray);
    font-size: 0.95rem;
}

/* Elevator Pitch Section */
.pitch-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.pitch-card {
    padding: 0;
}

.pitch-header {
    background: linear-gradient(135deg, #ff0000, #ff6b6b);
    color: white;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.pitch-header i {
    font-size: 1.5rem;
}

.video-container {
    position: relative;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
}

.video-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
    overflow: hidden;
}

.video-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70px;
    height: 70px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #ff0000;
    transition: var(--transition);
}

.video-wrapper:hover .play-button {
    background: white;
    transform: translate(-50%, -50%) scale(1.1);
}

.pitch-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 20px;
    background: #ff0000;
    color: white;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.pitch-link:hover {
    background: #cc0000;
}

/* Technology Stack */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.tech-card {
    padding: 30px;
    text-align: center;
}

.tech-icon {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.tech-tag {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(52, 152, 219, 0.1);
    color: var(--secondary-color);
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-top: 10px;
}

/* Results Section */
.results-section {
    margin-top: 60px;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
}

.results-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.results-card.future {
    border: 2px solid var(--secondary-color);
}

.results-list,
.future-list {
    list-style: none;
    margin-top: 20px;
}

.results-list li,
.future-list li {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    padding: 10px;
    background: rgba(52, 152, 219, 0.05);
    border-radius: var(--border-radius);
}

.future-list li {
    background: rgba(231, 76, 60, 0.05);
}

.results-list i {
    color: var(--secondary-color);
}

.future-list i {
    color: var(--accent-color);
}

/* Download Section */
.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.download-card {
    padding: 40px 30px;
    text-align: center;
}

.download-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.btn-download,
.btn-demo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    margin-top: 20px;
    transition: var(--transition);
    width: 100%;
    justify-content: center;
}

.btn-download {
    background: var(--secondary-color);
    color: white;
}

.btn-download:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.btn-demo {
    background: var(--accent-color);
    color: white;
}

.btn-demo:hover {
    background: #c0392b;
    transform: translateY(-2px);
}

/* Documents Section */
.documents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.document-card {
    padding: 40px 30px;
    text-align: center;
}

.doc-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.btn-view {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-color);
    color: white;
    padding: 12px 25px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    margin-top: 20px;
    width: 100%;
    justify-content: center;
}

.btn-view:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* Team Section */
.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.team-card {
    padding: 30px;
    text-align: center;
}

.team-img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 20px;
    border: 5px solid var(--secondary-color);
}

.team-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-id {
    color: var(--medium-gray);
    font-size: 0.9rem;
    margin: 5px 0;
}

.team-email {
    color: var(--secondary-color);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.team-cv {
    margin: 25px 0;
    padding: 20px;
    background: rgba(52, 152, 219, 0.05);
    border-radius: var(--border-radius);
}

.team-cv h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.cv-qr {
    width: 150px;
    height: 150px;
    margin: 0 auto;
    background: white;
    padding: 10px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.cv-qr img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.team-links {
    margin-top: 20px;
}

.linkedin-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #0077b5;
    color: white;
    padding: 12px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    width: 100%;
    justify-content: center;
}

.linkedin-btn:hover {
    background: #005582;
    transform: translateY(-2px);
}

/* Chat Bot */
.chatbot-window {
    position: fixed;
    bottom: 100px;
    right: 20px;
    width: 350px;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    z-index: 1000;
    display: none;
    overflow: hidden;
}

.chatbot-window.active {
    display: block;
    animation: slideUp 0.3s ease;
}

.chatbot-header {
    background: var(--primary-color);
    color: white;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chatbot-body {
    padding: 20px;
    max-height: 400px;
    overflow-y: auto;
}

.chat-message {
    background: var(--light-color);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 15px;
}

.quick-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 20px;
}

.quick-options button {
    padding: 10px;
    background: var(--light-color);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition);
}

.quick-options button:hover {
    background: var(--secondary-color);
    color: white;
}

/* Footer */
.footer {
    background: var(--primary-color);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    margin-bottom: 30px;
}

.footer-logo img {
    height: 50px;
    margin-bottom: 15px;
}

.footer-email a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--secondary-color);
    text-decoration: none;
    margin-top: 15px;
    transition: var(--transition);
}

.footer-email a:hover {
    color: white;
    transform: translateX(5px);
}

.project-tag {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.1);
    padding: 10px 20px;
    border-radius: 25px;
    margin-bottom: 15px;
}

.social-media {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: var(--transition);
    font-size: 1.2rem;
}

.social-icon:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

/* Animations */
@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 1200px) {
    .screens-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .pitch-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .vertical-controls {
        right: 10px;
        padding: 15px 10px;
        gap: 10px;
    }
    
    .control-btn {
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background: var(--white);
        padding: 20px;
        transition: var(--transition);
        box-shadow: var(--shadow);
        gap: 15px;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .screens-grid {
        grid-template-columns: 1fr;
    }
    
    .team-grid,
    .download-grid,
    .documents-grid,
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }
    
    .social-media {
        justify-content: center;
    }
    
    .chatbot-window {
        width: calc(100% - 40px);
        right: 20px;
        bottom: 80px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .vertical-controls {
        display: none; /* Hide on very small screens */
    }
}